Katana in Shirasaya(NBTHK Tokubetsu Hozon Paper) Signature : Hizen Koku Jyunin Tadayoshi Saku (first generation) (We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku) This HIzen Koku Jyunin Tadayoshi belongs to Jyojyo ...